Title:
回転速度検出装置
Document Type and Number:
Japanese Patent JP5765855
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide a rotation speed detection device (12) which achieves improved detection accuracy regardless of a compressor (9) and the operating state of the compressor (9), and enables the prevention of the breakage of a detection unit (13). A rotation speed detection device (12) for a compressor (9), wherein a detection unit (13) for detecting full blades (11b) and splitter blades (11c) that are blades approaching a compressor casing (10) of the compressor (9) in response to a change in the inductance of a magnetic field is provided. The detection unit (13) is provided in an overlap region (C) in which the full blades (11b) and the splitter blades (11c) that are all blades can be detected and the exposure pressure is in the range of a gauge pressure of one atmosphere or less.
Inventors:
Takeshi Takahashi
Nomura Hidekazu
Mitsuhiro Hibino
Kazuhiro Yamada
Toshiro Itazu
Nomura Hidekazu
Mitsuhiro Hibino
Kazuhiro Yamada
Toshiro Itazu
Application Number:
JP2012172397A
Publication Date:
August 19, 2015
Filing Date:
August 02, 2012
Export Citation:
Assignee:
Yanmar Co., Ltd.
TOYOTA JIDOSHA KABUSHIKI KAISHA
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
G01P3/49; F02B39/16
Domestic Patent References:
| JP9177555A | ||||
| JP2011241733A | ||||
| JP2007232470A | ||||
| JP2007198821A | ||||
| JP2005265790A | ||||
| JP2007321687A |
Attorney, Agent or Firm:
Juichiro Yano
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